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Simulation of Tensile Behavior of Nickel Foam

稀有金属材料与工程 2011年第S3期40卷 224-227页

作者： zhao mingjuan 1, zhang xiaolan 1, zhao longzhi 1,3, zhang jinsong 2 1 key laboratory of ministry of education for conveyance and equipment, east china jiaotong university, nanchang 330013, china 2 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, china 3 key laboratory of Superlight Materials & Surface Technology, ministry of education, Harbin Engineering university, Harbin 150001, china E china jiaotong Univ Key Lab Minist Educ Conveyance & Equipment Nanchang 330013 Peoples R China Harbin Engn Univ Minist Educ Key Lab Supertight Mat & Surface Technol Harbin 150001 Peoples R China Chinese Acad Sci Inst Met Res Shenyang 110016 Peoples R China

Nickel foam is widely used as the electrode, the catalyst carrier, sound absorption material and other application fields. The tensile behavior of the open cell nickel foam which is one of the most important parameters in the design process was investigated with the finite element method based on ANSYS software in this paper. The effects of strain rates and temperature on the yield strength of the nickel foam were obtained. The results show that the yield strength exhibit a nonlinear reduction with the increases of the temperature for the elastic bending of the struts of the reinforcement grew quickly depending on the temperature. However, the yield strength increases slowly with the improvement of the strain rate because the strain rate neither change the internal structure and properties such as the porosity and the aperture, nor alter the external circumstance in order to change the internal properties such as the temperature. The results of the simulation accord with those of the experiments, which is very important to understand the tensile behavior of the foam materials.

关键词： nickel foam ANSYS yield strength temperature strain rate

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